Quiet - quite - quit | What's the difference

What's the difference between quiet, quite and quit?

I know mixing them up is a common mistake, so here's a short video - check it out:

Quiet means making little or no noise.

Example: Please be quiet, the baby has just fallen asleep.

Quite means completely, fully, totally.

Example: I love this performance, it's quite spectacular!

Quit means to leave a situation - usually permanently.

Quitting has more of a sense of leaving a job/game/role/university course... etc. rather than a physical place, or 'giving up'.

Example: I'll quit my job, there's no chance of progression.